In-situ carbon coated manganese oxide nanorods (ISCC-MnO2NRs) as an electrode material for supercapacitors

The fabrication of energy storage devices with lowering the cost and improving the performance has always been the need for society. Therefore, supercapacitors with special features such as light-weight, easy portability and remarkable charging/discharging rate capability have widely been studied in the literature. In the present work, In-situ carbon coated manganese oxide nanorods (ISCC-MnO(2)NRs) have been studied for the supercapacitor application. ISCC-MnO(2)NRs were prepared by slip casting method followed by annealing at 1200 degrees C. During heat treatment, sucrose has transformed into conducting carbon and coated on the surface of MnO2. ISCC-MnO(2)NRs were examined by FEG-SEM, FEG-TEM, XRD, FT-IR, BET and Raman spectroscopy. The measurement of the electrochemical properties of the material was carried out in the two-electrode configuration using 1 M Na2SO4 aqueous solution as an electrolyte. The specific capacitance of ISCC-MnO(2)NRs was found to be 28.24 F/g at the current density of 1 A g(-1) with energy density of 0.98 Wh/kg. This work suggests ISCC-MnO(2)NRs may be a promising electrode material for the supercapacitor.